Non Proportional Relationships

Front

What is a non-proportional relationship?

Back

A relationship where the ratio between two variables is not constant.

Front

What is a proportional relationship?

Back

A relationship where the ratio between two variables is constant.

Front

What does the graph of a proportional relationship look like?

Back

It is a straight line that passes through the origin.

Front

What is the constant rate of change in the equation Y = mx + b?

Back

The constant rate of change is represented by 'm'.

Front

If the equation is Y = 3x + 5, what is the constant rate of change?

Back

3

Front

How do you find the cost of one item if you know the total cost and quantity?

Back

Divide the total cost by the number of items.

Front

If 24 boxes of pens cost $191.52, how much does one box cost?

Back

$7.98

Front

What is the equation for a repairman who charges a flat fee plus an hourly rate?

Back

y = hourly rate * hours + flat fee.

Front

If a repairman charges $75 plus $40 per hour, what is his pay equation?

Back

y = 40x + 75.

Front

What is a key characteristic of a non-proportional graph?

Back

It does not pass through the origin.